International Journal of Plant Protection

B. L. Mali ¹, Dinesh Kachhawa ²

Affiliations
1 Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur (rajasthan), IN
2 Department of Entomology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur (rajasthan), IN

Abstract

The yellow vein mosaic virus (YVMV) disease of okra [Abulmoschuse sculentus (Linnaeus) Moench.] caused by virus is a common and highly destructive disease in Mewar region of Rajasthan. The experiments were conducted under field condition to develop the effective, safe and economical management strategies through evaluation of agro-insecticides and botanicals. Among insecticides and botanicals evaluated, two foliar sprays of Imidacloprid 17.8 per cent SL and two sprays Azadirachtin were found effective against YVMV disease of okra. Maximum per cent efficacy of disease control (77.6 %) and per cent increase in yield (70.37 %) was recorded when plant were sprayed with Imidacloprid 17.8 per cent SL twice followed by two sprays of Azadirachtin 1500 ppm which was followed by two sprays of Imidacloprid and two sprays of Karanj oil 77.7 per cent and 63.31 per cent increase in fruit yields. All insecticides and botanicals alone or in their combinations increased the fruit yield. However, maximum increase was observed by two sprays of Imidacloprid and two sprays of Azadirachtin, where increase was 79.30 per cent (2011) and 72.60 (2012) as compared to other treatments including untreated control. The minimum white fly population 2.9/plant (2011) and 2.4/plant (2012) was recorded when plant were sprayed with Imidacloprid plus Azadirachtin followed by 2.8/plant (2011) and 3.6/plant (2012) white fly population was recorded when crop was sprayed with Imidacloprid plus Karanj oil.

Keywords

Yellow Vein Mosaic Virus, Management, Chemicals, Botanicals And Okra

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B. S. Rana ¹, Dinesh Kachhawa ¹

Affiliations
1 Department of Entomology, Rajasthancollege of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur (rajasthan), IN

Abstract

Extensive use of chemical insecticides for termite management has lead to hazardous residual impact on plant health. Moreover, they are very expensive and also toxic to human beings. Therefore, there is a demand to develop an alternative safe economic and eco-friendly bio agent to control the termite population under maize field condition. In the present investigation, the bio-agents i.e. Beauveria bassiana, Metarrhizium anisopliae and Paecilomyces fumosoroseus were used @ 5x1013 spore /ha and @ 5x1013 spore /ha FYM to enrich formulation and all the bio-agents have shown the promising results in in vivo in suppression of termite population in maize field. Similarly, the antagonistic fungi improved the germination as well as reduced the plant mortality caused by termite and improved the yield of maize as compared to untreated control. Result of entire study indicated a possibility of obtaining a powerful suppression of termite population by using plant beneficial bio-agents.

Keywords

Beauveria Bassiana, Metarrhizium Anisopliae, Paecilomyces Fumosoroseus, Bio-efficacy And Termite

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